????????

(?) ???????????????????
 

?1? ???????????????????????????Mbps????Mbps,????2???????100????????

?2? ???????????????????????????

?3? ??????????????????????
 

????????????????????????????????
 

1???????100Base-TX???????????????

?????????????100?? ???????????????RJ-45??Uplink???????100Base-TX??????????? RJ- 45???????

2???????100Base-TX??????????

?????????????100?? ???????????????RJ-45??100Base-TX??????????RJ-45??

3???????100Base-FX????

????????????????????? ????????????SC/ST????????100Base-FX???SC/ST???
 

???????????????????
 

1. ???????????????????????????????

2. ???????????????????????????????????????????????????????????????????

3. ??????????????????????????

4. ?????????????????????????????

????=?????-?????-????-???? (dB)??????=????×?????????????????????????0.4~0.5dB/km????2~4dB/km?